EP 3444933 A1 20190220 - SWITCHING POWER SUPPLY DEVICE
Title (en)
SWITCHING POWER SUPPLY DEVICE
Title (de)
SCHALTNETZTEILVORRICHTUNG
Title (fr)
DISPOSITIF D'ALIMENTATION À DÉCOUPAGE
Publication
Application
Priority
- JP 2016112341 A 20160606
- JP 2017020538 W 20170602
Abstract (en)
The switching power supply device (1) includes switching circuits (11, 12), a transformer (T), an LLC resonance circuit (10), a microcomputer (15) and a frequency regulator (16) which set switching frequencies of the switching circuits (11, 12), and a current detection circuit (17) which detects the current Ir. The microcomputer (15) and the frequency regulator (16) sweep a switching frequency, and set a switching frequency on the basis of times to start the dead times of the switching elements (Q11, Q12), the current Ir detected by the current detection circuit (17), and the threshold current Imin.
IPC 8 full level
H02M 3/28 (2006.01)
CPC (source: EP US)
H02M 3/01 (2021.05 - EP US); H02M 3/28 (2013.01 - US); H02M 3/33507 (2013.01 - US); H02M 3/33571 (2021.05 - EP US); H02M 3/33573 (2021.05 - EP US); H02M 3/33584 (2013.01 - EP US); H02M 3/33592 (2013.01 - EP); H02M 3/3376 (2013.01 - US); H02M 1/0009 (2021.05 - EP); H02M 1/0058 (2021.05 - EP US); H02M 7/4818 (2021.05 - US); Y02B 70/10 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3444933 A1 20190220; EP 3444933 A4 20191225; CN 108702093 A 20181023; CN 108702093 B 20191224; JP 6390823 B2 20180919; JP WO2017213029 A1 20180920; US 10333414 B2 20190625; US 2019052178 A1 20190214; WO 2017213029 A1 20171214
DOCDB simple family (application)
EP 17810207 A 20170602; CN 201780009570 A 20170602; JP 2017020538 W 20170602; JP 2018522445 A 20170602; US 201816159915 A 20181015